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Aerovent IM-155 User Manual

Im-155, Two-way and three-way heat saver/ventilator, Discharge sensor mounting

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©2000 Aerovent

Two-Way and Three-Way Heat Saver/Ventilator

ROOF

AIRFLOW

AIRFLOW

DAMPER

MOTOR

DISCHARGE
SENSOR

1

1

/

4

"

Clearance

TEMPERED

AIR – WINTER

EXHAUST

EXHAUST

SUPPLY

FAN SECTION

CURB

BASE

SECTION

Discharge Sensor Mounting

The discharge sensor is mounted on the bottom edge of the

unit so as to protrude into the tempered airstream. The tem-

perature reading is taken at the bottom of the unit, not at the

floor level. The temperature selector is located in the remote

control station.

Heat saver ventilators are designed to recirculate warm air

from the ceiling to the work area or to exhaust air to the out-

side. Three-way heat savers (RREH) can also draw fresh air in

from the outside and blow it down into the work area.

Modulating dampers in the unit temper the air to the desired

temperature setting.

Heat saver ventilators are designed to be installed through

a prefab or an existing roof curb and rest on the unit’s curb

base section. Mount the curb base section onto the roof curb

and secure the stack cap (RRES) or hooded inlet (RREH) to

the fan section. Extensions of the fan section are available to

provide clearance of roof and structural members.

Note: The fan must be allowed to stop before the motor

rotation is reversed. Do not switch any unit from exhaust to

recirculate or supply without allowing the fan blades to stop

rotating.

Suggested Mounting

of Three-Way Heat Saver

General Installation, Operation and Maintenance Instructions For Aerovent Products

IM-155

June 1997

®